A 62-year-old physics teacher was recently assaulted by one of his ninth-grade students. The incident, which reportedly took place at John F. Kennedy High School in Paterson, NJ, around 1:00 p.m. on Jan. 20, started out as a verbal exchange between the teacher and student. However, the exchange quickly escalated to a physical altercation over a cell phone.

According to North Jersey, the teacher confiscated the student’s cell phone when he refused to put it away. The student allegedly became enraged and assaulted the teacher in an effort to get his phone back. The physical assault was reportedly filmed with a cell phone by another student in the classroom. The footage was uploaded to YouTube on Wednesday, Jan. 21.

The 24-second clip shows the 16-year-old student wrestling with the teacher to take the phone. As if the physical contact wasn’t bad enough, the incident escalated when the student slammed the teacher to the ground. The student can be seen reaching down to grab something from the teacher before scurrying away when someone yelled, “Security!”

According to Pix-11, the school issued a statement in regards to the incident. While school administrators clarified that cell phones are allowed in classrooms, they should only be used for “academic purposes.” So, teachers can confiscate cell phones when they are not used accordingly. However, cell phones are usually returned to students at the end of the day. So, the student’s impatience led to the physical altercation because he would have gotten the phone back within a couple of hours.

School administrators also confirmed that the student was arrested on Friday, Jan. 23 and now faces charges for third-degree aggravated assault, the authorities said. Capt. Heriberto Rodriguez released a statement in regards to the student’s arrest.

“We took a statement from the teacher today,” said Capt. Heriberto Rodriguez. “After that, we went out and found the juvenile and arrested him.”